Gas heated toasting device



Jan, 14, 1936. L,-E. PADELFORD 2,027,930

GAS HEATED TOASTING DEVICE Filed Feb. 11', 1950 4 Sheets-Sheet l 1 I \zw 1 2532:

INVENTO/T 1. LESTER E. Paoau-ono Jan. 14; 1936. E. PADELFORD GAS HEATEDTOASTING DEVICE Fi led Feb. 11, 1950 4 Sheets-Sheet 2 .Z'A/vE/L Tafl'LESTER E. PADELF'ORD Jan. 14, 1936. L. E. PADELFORD GAS HEATED TOASTINGDEVICE Filed Feb. 11, 1930 4 Sheets-Sheet 5 ZZ/VENTOF LESTER EvPADELFORD jam, 14, 1936. E. PADELFORD GAS HEATED TOASTING DEVICE FildFeb. 11, 1930 4 Sheets-Sheet 4 INVENTOI? LESTER E PADELFORD Vllllll l||llI l astas-1... 14, 1936 was s'r -TE PATENT OFFICE e I 2.027.930 1 1 1Gas HEATED roas'rmo DEVICE? Lester E. Padelford, Buffalo, N.- .-y.'...ss 1m. .to 1

The Republic Metalware Company, Buifalo, N. Y., a corporation of NewYork T 1 1 1 Application February 11 1930, Serial No. 427,620

, 1 My invention relatesingeneral totoasting devices, and in particularto that type, of toaster in Which-. baskets' are carried by chainsthrough the toasting chamber.

One of the objects-o1 my invention has been to provide a novel heatingchamber for toasting devices. e

Another object has been to provide molded heating chamber walls providedwith means for 10 holdingradiant elements.

Another object has been to provide a highly polished reflector forztheheat produced by the radiants. 1 1 e A further object has been toprovide radiants 15 having. passageways for auxiliary air.

, Moreover, the toasting chamber of my device is substantially closed ateach side of the bottom thereof, and the burners of the'device aredesignedzto pass up throughopenings' formed in 20 the bottom, eachopening" being of such a relative size that-auxiliary air will passbetween the opening and humor and be supplied to the burner. 1 Y.

Furthermore, the burners of my device are so 25 designed thatasubstantiallyuniform degree of heat is generated clear across thechamber at the plane where the toast is made;

Other objects are to provide a device which shall be veryeconomical intheconsumption of 30 gas, and one in which the toastmade therein shallbe uniformly brown. The above objects and advantages have beenaccomplished by the device shown'in the accompanying drawings, of which?1 35 Fig. ,1 is. a vertical, sectional elevation of my device.- 1

Fig. 2 is a sectional plan view of the same, taken online 2-2 ofFig 1.'1 e e Fig. 3. 1s a fragmentary, perspective view of 40 one of thecombustion chamber walls, showing the burner and radiant elements.

Fig. 4 is a plan view of one of the cross members for closing oil thebottom of the combustion chamber, showing one of the burners secured inplace therein.

Fig. 5 is a fragmentary, sectional view taken throughthe center of oneof the burners, showing 1 a portion of the combustion chamber wall andthe radiants. 1 1 1 1 T c Fig. 6, is a rear elevation of one of theradiants.

My device comprises a casing Ill being open at the front side,1andhaving a rear wall II and interspaced sidewalls l2and l3. A front plateIt arranged across the upper part of the front 55 of the casing andbehind the upward pass of the sprocket chains l5. Two sprocket chainsare provided, one at each side of the device, andeach of them passesover an upper sprocket wheel l6, and two lower sprocket wheels I! and[8. The sprocket i8 is so arranged below the sprocket l6 that thedownward pass of the sprocket chains will be in a substantially verticalposition within the center of my device. The front plate I! is inclinedbackwardly, as shown in the drawings,

- and the chains l5 follow substantially this inclil0 nation. I Aplurality of toast baskets 22 are carried by thechainaand because of theinclination of the upward pass of the chains, slices of bread may beconveniently placed within the baskets as they are traveling upwardly,the inclination serving toprevent their falling out in the upwardpassage. The front plate It isprovided with a curved portion I9, thecurvature of which is substantially concentric with the upper sprocketIS. The

sprockets I! and I 8 areseparated from each other, 1

so that the chains'are caused to have a horizontal pass, during whichtime the baskets are moved to the horizontal position, and the toastdischarged therefrom. A curved plate 20 is arranged under the sprocketwheel l8 onto which the toast drops. The plate is inclined upwardlytoward the back of the device so that the toast when striking it will bedischarged forwardly and deposited within a tray 2i arrangedat the frontof the device. A wire rack (not shown) may be placed on the bottom ofthe trayfor" keeping the finished toast out of contact therewith,whereby sweating will be avoided. A suitable motor 25 is provided bywhich the sprocket wheel [8 at one side ofthe device is driven,preferably by means of a sprocket chain 26, shown in'dotted lines inFig. 1.

The toasting chamber 30 'of my device is provided with two molded ovenwalls 3| and 32. The wall 3| fits within the front plate It, and at itsupperend within the curved portion ill 40 thereof. The wall 32 at theback of thedevice is arranged in interspaced relation with the rear wallIi of the casing, whereby the casing .wall is kept relatively cool.Vertically arranged wires 33 extend down into the toasting chamber andare arranged parallel to the downward pass of the chains l5, whereby theslices of bread will be kept from falling into the chamber during theirdownward passage therethrough. Thewires 33 are carried by a framework 34which is slidof refractory material is arranged at the upper end of theoven wall 32, and extends across the device for the purpose of closingoil the space provided for the insertion of the rack 34 manying thewires 33.

Each of the oven walls is carried by a cross member 42 which extendsfrom a point on each side of the passageway 43 formed through thechamber, to the outside edge" of the lower part of the wall. Each ofthese cross members is provided with a slot 44 through which the top 45of the burner 46 projects. The top ledges 41 of the burner are arrangedin interspaced relation with the bottom of the cross member, so thatauxiliary air may pass up between the cross mem-' ber and the burnerledge. The top of the burner is formed with a longitudinal slit 5!]extending from which are a plurality of lateral slits 5|. The lateralslits are not uniformly arranged throughout the length of the burner,but a lesser number of them is provided at the center than at the twoends, since it is necessary to provide a greater amount of heat at theends than at the center. The amount of heat, therefore, generated byeach burner will be distributed substantially uniformly throughout thewidth of the toasting area. Each burner is of the Bunsen type and is, ofcourse, provided with a suitable mixer 52, gas being fed to the mixer bypipes 53 connected with a header 54. Each of the gasl mers is suspendedfrom the cross member, and is secured thereto by any suitable means.

The lower portion of the inner surface of each of the oven walls isinclined as shown in the drawings, and the inclined surface carries anumber of radiant holders 60. The number of these holders will dependupon the number of slices of bread to be carried by each of the toastbaskets 22. In the drawings, I have shown three of such holders. Theseholders are made of polished metal preferably stainless steel and theexposed surface 6| of each acts as a reflector for the heat generated bythe gas burners. Each of these holders is provided with a flange portion62 which is arranged in interspaced relation with the exposed surface BIand at a distance suflicient to receive the radiant 63. The upper end 64of the flange 62 is provided with a slit 65, whereby this upper end maybe bent over the top of the radiant so as to hold it in position. Thelower end of the radiant holder is provided with an outwardly turned lug66 which contacts with the lower edge of the r diant.

Each of the holders has its lower end 61 bent backwardly at an anglewith the exposed surface 6| so as to expose auxiliary air openings 68formed in the cross member 42.

Each of the radiants 63 is formed in its back with a plurality oflongitudinal passageways 10, and a plurality of openings H are formedthrough the face of the radiant and extend from these longitudinalpassageways. When the radiant is in position, as shown in Figs. 1 and 3,auxiliary air will pass up through the openings 68 formed in the crossmember 42 and into the passageways whence it will pass through theopenings H to complete combustion at the face of the radiant. Theradiants are preferably formed with a plurality of cone-shapedprojections 12, which become practically incandescent when the gas isburning and thus aid in the combustion of the gas products. Anoverhanging flange I3 formed at the top of each of the radiants servesnot only to deflect the heat outwardly toward the holders,

through the holes 68 formed in the cross members 42 and be supplied tothe burning flame at the face of the radiants, as hereinbeforedescribed.

Obviously, some modifications of the details herein shown and describedmay be made without departing from the spirit of my invention or thescope of the appended claims, and I do not, therefore, wish to belimited to the exact embodiment herein shown and described, the formshown being merely a preferred embodiment thereof.

Having thus described my invention, what I claim is: s

l. A toasting device comprising a casing, a toasting chamber within thecasing, said chamber being formed by oppositely arranged oven walls,refractory radiants carried by the walls and each being formed withlongitudinal grooves in its rear face and with openings extending fromthe grooves to the front face thereof, means for supplying air to thegrooves, a burner for heating the radiants, and means for conveyingbread to be toasted between the oven walls.

2. A toasting device comprising a casing, a toasting chamber within thecasing, said cham ber being formed by oppositely arranged oven walls,cross members carried by the casing and supporting the oven walls, aburner carried by each cross member and arranged under each wall,radiants carried by each of the walls and arranged over the burners,each radiantbeing formed with vertical passageways and holes extendingto the face thereof, the cross member being formed with openings,whereby auxiliary air is supplied to the passageways of the ra-. diants,and means for conveying bread to be toasted between the oven walls.

3. A toasting device comprising a casing, a toasting chamber within thecasing, said-chamber being formed by oppositely arranged oven walls,radiant holders having vertically arranged flanges carried by the walls,radiants carried by each radiant being formed in its rear face withlongitudinal grooves and connecting holes extending through the face ofthe radiants and communicating with the grooves, means for supplyingauxiliary air between the radiants and radiant holders, a burnerarranged under the radiants, and means for conveying bread to be toastedbetween the oven walls.

, 4. A toasting device comprising a casing, a toasting chamber withinthe casing, the chamber being formed by oppositely arranged oven walls,sprocket chains carried by the casing, and a plurality of toast basketsrigidly attached to the sprocket chains, the downward passes of theupward pass will be retained in position and then passed downwardlythrough the toasting chamber.

'5. A toasting device comprising a casing, a

toasting chamber within the casing, said cham- .78

ing chamber being formed by oppositely'arranged refractory oven walls, apolished metallic plate carried by and in contact with the inner face ofeach refractory wall, a refractory radiant adjacent to each metallicplate and formed with a plurality of openings, burners for heating theradiants, and means for conducting air between the metallic plates andtheir adjacent radiants.

'7. A toasting device comprising a casing, a toasting chamber within thecasing, said chamber being formed by oppositely arranged oven walls,radiants carried by the walls, and burners for heating the radiants,each burnerbeing provided with a plurality of openings, the combinedarea of the openings formed in the central portion of the burnerbeingless than the combined area of the openingsformed in each end portion ofthe burner.

8. A toasting device comprising a casing, a tosting chamber within thecasing, said chamber beingfformed by oppositely arranged oven walls,radiants carried by the walls, and burners for heating the radiants,each burner being formed with alongitudinal slit and with a plurality oflateral slits communicating with the longitudinal slit, a greater numberof lateral slits being provided within a certain length at each endportion of the burner and a smaller number of slits within the samelength intermediate the end portions.

9 A toasting apparatus comprising a pair of spaced, upwardly extendingheating elements, a single supporting sprocket. at each side of theapparatus and arranged above one of said heaters, two endless chainssupported on said sprockets, the upward passes of said chains beingexposed and inclined and the downward passes being substantiallyvertical and passing through between the heaters, and fiat basketsrigidly mounted at successive intervals on said chains and extendingoutwardly therefrom the inclination of the upward passes of the chainsbeing such as to prevent slices of bread from falling out of the basketsduring the upward inclined movement thereof.

LESTER E. PADELFORD.

